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Title: tampering-proof paper wallets and coins by chemical reactions Post by: Xer0 on November 12, 2013, 12:14:00 AM Defcon demonstrated that Casascius coins can be read out and sealed again without much traces
What about using ink which reacts with water and dissolves? by making your coin wet, the private key can be exposed only one time or by using a dye reacting with air you can have the key dissapear some time after removing the cover |